Permutation electric switch.



SIGURD O. MATTISON, OF EAU CLAIRE, WISCONSIN.

PERMUTATION ELECTRIC SWITCH.

Speciiicaton of Letters Patent. `Pgpiented Feb. 19, 1918.

Application filed December 4,1916. Serial No. 134,898.

To all whom t may concern:

Be it known that I, SicuRo O. MA'rrI- soN, a citizen of the United States, and resident of Eau Claire, in the county of Eau Claire and State of lVisconsim-have invented certain new and useful Improvements Ain Permutation Electric Switches; and I d'o hereby declare that the following is a full, clear, and exact description thereof.

The present invention relates to new and usefulimprovements in electrical switches controlled by permutation disks whereby closing of the switch is contingent upon the knowledge of the permutation members of said disks.

Itis in general the object ,of the present invention to simplify and otherwise improve the structure and to increase the efliciency of structures of this character, and it is more specifically an object of the invention to provide an arrangement wherein the. permutation disks themselves are utilized as contact closers.

A further object resides in the provision of a permutation controlled switch which may be actuated to selectively connect two of a series of Contact members, t-hnsproviding a Atwo-point or three-point switch in accordance with a number of contact points in said series.

lfVith the above and other objects and advantages in view, the inventionresides more particularly in the novel combination, formation and arrangement of the parts hereinafter described and particularly pointed out in the appended claims.

In the drawings:

Figure l is a front elevational view of a switch constructed in accordance with the present invention.

Fig. 2 is a vertical sectional view through the switch on the lille 2 2 of Fig. 1.

f Fig. 3 is a sectional view through the switch on the line 3-3 of Fig. 2.

F ig. 4 is a diagrammatic View showing a plurality of electric circuits with which the switch is adapted for association.

Referring now more particularly to the accompanying drawings, there is provided a, body plate 5, preferably formed of insulating material and which is adapted in the present instance for securement by the cor-` ner bolts 6 to a wall 7 adapted to shield the circuits with which the switch is associated. Passed centrally through the body plate is a tubular shaft 8 which is rigidly secured to said plate by nuts 9 threaded thereon at the sides of the plate. Rotatively mounted on the shaft are a series of, in the present instance three, disks 10 separated in the usual manner by spacing collars 11 splined on the shaft, and these disks are also provided on their adjacent faces with the usual abutting pins 12 whereby upon reverse movements of one of the disks, corresponding portions of their periphcries may be alined. For rocu-ring such movements of the disks, a olt 13 is passed through the tubular shaft 8 and has fixed on its outer end a dial plate 14 carrying inwardly extending pins 15 engageable in the outermost disk 10. The dial also carries a turning knob '16 and the bolt 13 0n which the dial is carried is held against displacement by a nut 17 threaded on its inner end and abutting the tubular shaft 8. The

disks areA inclosed by a suitable casing shell 18 preferably secured on the body plate by the fastening bolts 6 thereof.

Io provide a manual switch control means. a fourth disk 19 is rotatably mountvcd on the shaft 8 inwardly of the disks 10 and carries a 'depending actuating'farm20 extending through the casing. Secured on the inner face of the disk 1,9 is a Contact plate 21 which is adapted to. selectively conneet two of a series of in the present i11- stance three, spring urged plunger pins 22. These pins are sljdably mounted in the reduced endsof sleeves 2l passed through the body wall' 5 and are 'headed within the sleeve-l for abutment by expansile springs 2J therein, which also bear against screws 26 threaded in the other ends of the sleeves and preferablv serving also as binding posts. To the outermost sleeves 24 are connected wires 27 of different circuits and a common circuit wire 28 is connected to the central slee\'e and extends to contact means adaptcd to be closed by actuation of the permutation disks 10. This contact means comprises transverse pairs of spring rged plungcrs 29 carried by sleeves 30, -si ilar to the sleeves 24, mounted in a bracket Iarm 31 projecting from the bed plate 5, and each pair of contact pins 29 is adapted to be connected. by a contact strip 32' inset in the peripheral portion of a corresponding permutation disk 10. In wiring, thc common circuit wire 28 is connected to one of the endlnost. sleeves 30 and a wire 33 is connected to the diagonally opposite endmost sleeve 30 and is branched for communicapins29 are connected by the l.strips 32 of the permutation disks, current may pass through all of said pins, their corresponding sleeves 30, the common circuit Wire 28 'and the common circuit wire 33 and other portions of a circuit of which they form a art.

Vhile I have shown the switch means controlled by the arm carrying independently movable disk 19 as adapted to direct current through one ont a plurality of circuits, it is obvious that said switch means lmay be utilized to make and break a single circuit, thus providingr a switch contact in conjunction with the permutation control, whereby a current may be opened or closed Without necessarily actuating the permutation means. lt is also obvious that various changes and modifications of structure maybe employed to meet differing conditions of use, Without departing in any manner from the spirit of the invention as interpreted by the accompanying claims.

What is claimed is: l

l. A permutation switch including a casing, permutation disks journaled in the casing upon a common shaft, abutting projections on certain of said dlsks, a handle eX- tended from one of the disks, a contact strip in the rear face of said disk, co-acting contact members adapted for selective engagement with the said `'contact strip, contact strips carried by the peripheral edges of the other of said disks and adapted to be alined, and co-acting contact members engageable by said contact strips When,

alined whereby to complete "a circuit.

2. A permutation switch including a cas ing having a non-conducting bed plate, a l

series of tumbler disks journaled in the casing upon a common' shaft, a. contact stripy A nascere in the outer peripheral edge of each disk and Iadapted to be alined, a bracket arm projecting from thev bed plates and formed of` non-conducting material, a series of sleeves.

arranged in pairs and mounted in said bracket arm, one pair of sleeves being disposed over each disk transversely to the axis thereof, a spring urged plunger mounted in each sleeve and engaging the peripheries of their corresponding disk, said pairs of sleeves having each one connection with one sleeve of its adjacent pair whereby to form a continuous flow of current there through when the said contact strips are alined, and an, independent disk journaled on said shaft and having means operable thereby to form a complete circuit together with said plungers substantially asl described.

3. A permutation switch including a cas ing, a series of Ltumbler disks journaled therein, a handle continued from the disk adjacent the rear Wall of the casing, a contact strip. carried by the' rear face oi said disk and near the peripheral edge thereof, spring urged contact plungers carried by the rear Wall of said casing and resiliently engaging the rear face of said disk adjacent thereto, said plunger being adapted to be selectively engaged by the Contact strip of said adjacent disk, contact strips carried bvthe outer peripheral edge of the other of said disks, a series of connected pairs of lering urged contact plungers, said plrmnjers each being engageable by the contact strip, of its corresponding contact disk, and means for alining said contact strips whereby to complete a circuit substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand at Eau Claire, in the county of Eau Claire and State or Wisconsin, in the presence of two Witnesses.

Witnesses:

J. F. ELLES, MARY Plinn-n. 

